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1 ene 1969 año - Willco
Descripción:
introduces the first hearing aid with a directional microphone
Añadido al timeline:
History of Deaf Technology (1960-2017)
By
Aniya Smith
7 dic 2017
0
0
3817
fecha:
1 ene 1969 año
Ahora mismo
~ 55 years ago
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